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A brief talk on the polymorphism of Java enum

enum+ polymorphic, I did not say wrong, but Enum is not can be inherited, also can not inherit from others, just can realize interface, what talk about polymorphism?But let's look at the phenomenon first: Java code public enum Fruit {APPLE, PEAR, PEACH, ORANGE; } The above is a simple enum, about which I would like to add:fruit is java.lang.Enum.sub-class, exactly, is a subclass of Enumto illustrate this more intuitively, let's look at

Common sense re-talk: Why are registered users

talk about the affairs of affairs, only talk about business" is a kind of traditional virtue? Deserve to be tasted bitter. Ali Mother's approach is very simple, is to seek to Taobao, Alibaba's registered users successfully converted to advertisers, these registered users are businesses, businesses, businesses. I like this direct profit model, not only to comply with the needs of registered users, but also

How does ASP talk about applying to classes? _asp class Classes

First excerpt Tenkine Yang teacher An article in a paragraph: Object-Oriented Programming With the complexity of program design increasing, the method of structured programming is not enough. The root cause of lack of use is "code reuse" when inconvenient. The object-oriented approach is born, and it implements a more complete code reuse function through inheritance. Many students in the job, interview, often asked a question "You come to talk about

Big talk design mode C + +--table Drive method Transformation Simple Factory

The last time, "Big talk design mode C + +-Simple factory model" pointed out the shortcomings of the simple factory model, that is, against the development-closure principle, the main reason is because of the use of switch judgment structure, so as to modify or add new objects need to change the simple factory class code, how to change the switch structure, The table-driven approach is ready to go.The table driver method is described in the Data Drive

Let me talk about the differences between PHP and Java in web development.

Here the title is to talk about the difference between PHP and Java, in fact, is a euphemism, in fact, others want to listen to PHP good or Java good!!! Thus find the sense of existence!!! Because I am from the years of PHP development to Java development. So, most of the time, there are several colleagues asked me, you think Java is good or PHP good. Every time I answer is, different, each has its own advantages, this is the most practical answer.The

Talk about how spring IOC realizes decoupling __spring

of knowledge, for the IOC framework products are not in-depth understanding, nor rashly introduced. Finally, special emphasis on operational efficiency of the project or product, nor is it appropriate to introduce the IOC framework products, such as the WEB2.0 Web site is the case. The third part: Coupling realizes spring IOC principle analysis The end of the article for everyone to a programmer joke: [M] First of all congratulations to keep the students found their favorite job, the incident

SEO Research: Talk about the Web site ranking Link analysis technology

All those who know a little about SEO are aware that links are an important factor in the ranking of websites, but they do not necessarily fully understand which aspects of link analysis affect search engine rankings. Today I'll give you a brief introduction of my observations and thoughts. First, there are two points to emphasize: 1 The meaning of link analysis technology is more extensive than Google PageRank. Because of Google's aura and the PR of the publicity, so that a lot of people to see

Foreign designers: Talk about user experience trends and plagiarism is flattery

," Maccarone said. In contrast to retail stores, they are all focused on shouting: "Take a look, just 998!" 108 South African real Diamonds take home! "But maccarone that customers are more focused on clothing features, new designs and hot items." For Maccarone at least, those shops are more conducive to customer rational choice. Maccarone says the above example is not the worst case: More and more people are beginning to copy this model, they feel that dots's behavior is sure to succeed. The

Website promotion experience Talk about

Promotion | Website promotion Website promotion experience Talk about A website no matter how perfect, if it does not promote it, rely on the promotion to improve its access volume, then, this site can only say that it is to do to their own look, the significance of its existence is greatly inferior. How to promote, how to improve their website traffic, and to attract the attention of customers, so that he from today's new customers into tomorrow's ol

Talk about your website, "What's the user for" and "Why?"

, does not propose certainly cannot obtain the help, therefore the user "The love asks" IS has the sufficient driving force. As for why other users want to answer, it is the following other motives to talk about.For the user self-interest needs, the site as long as intermediary services, and strive to meet good, you can ensure that users continue to contribute content, and attract other users also contribute content.By the way, users do not have the p

IP breakthrough 10,000, talk about how I do the Web page of some experience

portal, then I found that it is difficult, after all, the ability of individuals is limited, I think: People often should be willing to give up, because the abandonment is to better development. At the same time, the result of catching two rabbits is that you can't catch one. I personally feel: China's webmaster really many!! I now QQ already has hundreds of people, all is stationmaster, these stationmaster actually is I constructs the station the resources.

Talk about design itself: what is the source of inspiration for design?

Xin Teacher is also research interactive design, how do you see this phenomenon? For this major, because I did not involve, so not too much comment, can only talk about what they saw and heard feelings. In my opinion, interactive design is a big category, in fact, there are a number of areas, for the simplest example, the vacuum cleaner needs to work, you have to press the switch, and when you press the switch, you have an interaction with the vacuu

Talk about the development of personal website-the foundation of website promotion

talk about is how we go to the website to let more netizens to accept so that you gain. I remember a lot of webmaster asked me the same question, why my site will not develop, why there is no flow, I also carried out the SEO keyword optimization, but also often according to the experience of many webmaster to promote, is very unsatisfactory? This problem is more serious is also a lot of webmaster face confusion! I can tell you a certain fact, you did

Talk about my deep understanding of typeof and instanceof in JavaScript _javascript skills

This is mainly about the type judgment function of JavaScript typeof and judging the use and attention of the prototype instanceof of the constructor. typeof Let's talk about typeof first. The first thing to note is that the TypeOf method returns a String that represents the type of data. TypeOf is a unary operation, which can be any type of operation before it is placed in one op-count. The return value is a string that describes the type of the

Talk about my understanding of service fusing and service demotion

With the micro-service architecture being advertised in full swing, some concepts have been pushed in front of us (accept it or not), in fact most of the concepts have been there before, but rarely mentioned so often (now seem to be embarrassed to communicate without mentioning it). Think of someone summed up a word, the characteristics of micro-service architecture is: "An explanation to understand, a question is not known, a discussion on the quarrel." In fact, the ability to summarize the for

Talk about my understanding of JavaScript prototypes and closures (handy notes 8) _javascript tips

In the previous article I introduced "talk about my understanding of JavaScript prototypes and closures (handy notes 6)", and talk about my understanding of JavaScript prototypes and closures (handy notes 9) for details. Execution context Stack When the global code is executed, an execution context environment is generated, and each invocation of the function produces an execution context. When the functi

Be hidden fear--also talk about the development trend of blog

Every time I look at the sky, imagine the vast beyond the imagination of the universe, and we just in one of the faint dust, here want to use this topic to rip, talk about my blog development trend of some views. This is a similar psychological experience, but I'm more of a fragment of life: When you come down from a high-speed train, you are engulfed by the crowd at breakneck speed ... When you are very unfortunate to go to the people's Square at rus

Webmaster share: Talk about the revelation of the Mass

No matter what to do, we are in the pursuit of flow, popular speaking is a regular batch of quantitative operations. In the traditional company process has been very popular, but in the emerging internet industry, more and more grassroots webmaster also began to walk process steps, the most obvious is the mass. Mass has a variety of, today talk about the emphasis is on the high weight platform on the release of the long tail of the keyword model. Acco

Xiangyang seo talk about Baidu algorithm big update snapshots do not update keywords do not rise?

Recently a lot of webmaster friends and SEO technicians talk about Baidu too difficult to wait, their own website Baidu snapshot is not updated or updated very slowly, there are some key words in particular Baidu search changes infinite, let a person overwhelmed. This case how do we do seo, today Xiangyang seo would like to talk about Baidu does not update and so on, we should do, what kind of mentality to

Zhu Wenle: Also to talk about the Wolf rain SEO site was k

This thing has been some days, English seo a bit after knowing, but also to talk about the Wolf rain SEO events. Personally feel that we talk about the most is a high-profile theory and cheating theory, in fact, the Wolf rain is K, is a lot of onlookers hope, Baidu to k it, is also a necessity. Why do you say that? The Gray method originally hit Baidu's short rib, once discovered absolutely will not condone

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